Thanks for the replies lovelies!

Mum_of_5 that is one of my fears, DS jumping off the boogie board! TBH the idea of going into the supermarket without him restrained terrifies me a bit...

Feeb, I can really see how it would be handy to have that option. A toddler complaining about walking would get really tired, really fast! I have wondered about the PT's, does your DS1 still fit in the underneath seat?

Bloom, I do do a lot of walking. I prefer to walk if the weather is good and really only take the car if we are going long distances or if it is raining. You've scared me a bit with your comment about pushing a 3 year old and a baby - would it really be that hard?

It's so hard to know what to do. I do like to go for walks and walk to the shops pretty much every day that I am home. But when bubs arrives I plan on keeping DS in childcare at least 2 days a week, if not his current 3 days... On weekends DH is around and we have a stroller so if we were to go somewhere we could each push a pram. Which basically leaves me with the 2 or 3 days during the week when I'll be home with both of them... In the first 6 months or so I could probably make do with the buggie board/sling, but then it's not really the ideal situation either is it? I'm just not sure if it would be a waste to shell out the $$$$ for a double pram and then a year down the track not really be using it.... But at the same time I think there could be times where life would just be a whole lot easier with it....
Yes he does, they swap around a bit who goes where. DS1 head is a bit above bar at top of seat in bottom but he doesnt care as he doesnt sleep in it and always leaning to side to look he prefers bottom seat to top.

I also like fact that i can just have main pram without toddler seat if i was taking just 1 of them somewhere as would be annoying tpo push a double pram side by side with 1 child.